Cutting and the like tools

Details Cutting and the like tools Cutting and the like tools

1988-09-13

1990-07-10

Schmidt, Frederick R.

Turning

Portable lathe for pipe turning

82128, B23B 500

Patent

active

049399659

ABSTRACT:
The invention relates to cutting and the like tools and is particularly concerned with the cutting of an internal weld bead from within plastics pipes. It is well-known to remove an external weld bead from the junction between two plastics pipes, not only to provide a smooth external profile but also to allow the weld between the pipes to be inspected. The costs and difficulties in removing the internal beads at the welded junction has frequently resulted in the internal bead being left, and when the internal weld cannot be inspected, and turbulence created in gas or fluid being driven through the pipeline results in a higher power requirement. One object of the invention is to provide a simple and effective means of removing an internal weld bead, which objective is met by a construction characterized by a body member (1), adjustable support means (23, 28) on the body member to locate the body member within a pipe, a motor (2) with the body member, a feed screw means (7) slidably mounted on shaft (3) extending from the motor, the feed screw means (7) engaging a threaded bore in a drive screw means (8) located in the body member, and there being cutter and the like means (21, 30) removably secured to the end of the feed screw means.

REFERENCES:
patent: 4085505 (1978-04-01), McElroy
patent: 4101368 (1978-07-01), Page
patent: 4186630 (1980-02-01), Lindhag
patent: 4532837 (1985-08-01), Cuchinbury
patent: 4668133 (1987-05-01), Cambell
patent: 4678379 (1987-07-01), Sunday
patent: 4729502 (1988-03-01), Fukukawa
patent: 4758121 (1988-07-01), Kwech

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